CN112624113A - External heating type activation furnace - Google Patents
External heating type activation furnace Download PDFInfo
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- CN112624113A CN112624113A CN202011553678.4A CN202011553678A CN112624113A CN 112624113 A CN112624113 A CN 112624113A CN 202011553678 A CN202011553678 A CN 202011553678A CN 112624113 A CN112624113 A CN 112624113A
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- 230000004913 activation Effects 0.000 title claims abstract description 238
- 238000010438 heat treatment Methods 0.000 title claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 185
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 119
- 239000000463 material Substances 0.000 claims abstract description 84
- 238000002485 combustion reaction Methods 0.000 claims abstract description 46
- 238000003763 carbonization Methods 0.000 claims abstract description 43
- 239000005539 carbonized material Substances 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000001994 activation Methods 0.000 claims description 241
- 238000001816 cooling Methods 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 15
- 238000000197 pyrolysis Methods 0.000 claims description 11
- 239000002918 waste heat Substances 0.000 claims description 10
- 101100439669 Drosophila melanogaster chrb gene Proteins 0.000 claims description 8
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- 230000008093 supporting effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000003610 charcoal Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 238000007725 thermal activation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005530 etching Methods 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000002309 gasification Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
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- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
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- 241001330002 Bambuseae Species 0.000 description 1
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/39—Apparatus for the preparation thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The embodiment of the invention relates to the technical field of activated carbon production, in particular to a device which comprises a carbon activation converter, a combustion chamber, an activation pipe and a superheated steam input pipeline, wherein the carbon activation converter is rotatably arranged along the axis of the carbon activation converter; the combustion chamber is arranged around the periphery of the carbon activation converter; the air inlet of the activation pipe is arranged in the activation area of the carbon activation material, and the activation pipe extends backwards, penetrates out of the activation area of the carbon activation material and is communicated into the combustion chamber; the steam inlet of the superheated steam input pipeline is communicated to the high-temperature steam, and the steam outlet of the superheated steam input pipeline penetrates into the carbonization material activation area. The embodiment of the invention has the beneficial effects that: through anaerobic activation, the carbonized material is not oxidized, the consumption of self heat energy of the carbonized material is reduced, and raw materials are saved; contact areas of the carbonization material activation reaction and the superheated steam are uniformly distributed in the eight grids. The superheated steam and the carbon have tiny etching reaction to form micropores, so that the specific surface area is enlarged, and the adsorbability of the activated carbon is enhanced; CO, H2The combustible gas is burned back and reused to realize energyAnd the waste gas is recycled, so that energy is saved and emission is reduced.
Description
Technical Field
The invention relates to the technical field of activated carbon production, in particular to an external heating type activation furnace.
Background
In the existing phosphoric acid method for producing activated carbon, an internal heating type heating mode of reverse hot gas and material flowing is adopted, namely hot air is heated from a furnace end to supply heat air to a furnace tail, and carbonized and activated materials flow from the furnace tail to the furnace end. Large quantities of pyrolysis air during the production process: CO, CO2, water vapor, phosphoric acid vapor, wood gas and tar are discharged into the atmosphere through a flue, air is seriously polluted, energy consumption is serious, and the heating energy consumption cost of per ton of carbon finished products is 300-400 yuan. Under the pressure of domestic environmental protection, enterprises spend a large amount of financial resources to improve the purification system of discharging fume, but the effect is very unobvious, and invest in greatly. In the conventional phosphoric acid activation process, the ash content of the activated carbon is higher due to the fact that high-temperature flue gas often contains tiny solid particles, the quality of the activated carbon is obviously influenced, the volatilization of phosphoric acid serving as an activator in an impregnation material is aggravated by heating medium airflow at high temperature, the consumption of phosphoric acid is improved, and the production cost of the activated carbon is increased.
The passive technical transformation can not completely radically treat the pollution source, and the basic reason is that the drying section discharges damp at low temperature, the raw materials only discharge water vapor to basically not pollute the atmosphere, the pollution mainly comes from a medium-high temperature pyrolysis section, the pyrolysis reaction of the raw materials is severe at 350 ℃, a large amount of CO, wood gas, tar and the like are decomposed in a furnace and mixed with the water vapor to be directly discharged into the atmosphere, and therefore serious pollution is caused.
The chinese patent office discloses, in 2018, 3 and 2, an invention patent of an internal radiation heat type activated carbon production device, which is entitled and issued with publication number CN105565315B, the carbon activation converter has a converter front end and a converter rear end, the converter front end is provided with a converter carbonization material feed inlet, the converter rear end is provided with a converter activated carbon discharge outlet, a heat radiation heating body is arranged in an inner cavity of the carbon activation converter along an axial direction of the inner cavity, the heat radiation heating body has a built-in heating device, the converter carbonization material feed inlet is connected with a feed device, and the converter activated carbon discharge outlet is connected with a discharge device. Although the internal radiant heat type activated carbon production device can be beneficial to the stable operation of activated carbon production, energy conservation, environmental protection or improvement of the quality of activated carbon, the internal radiant heat type activated carbon production device also has certain defects, such as that pyrolysis gas is supplied by a Roots blower in an internal furnace tube, and oxygen and CO are mixed and then violently combusted to release a large amount of heat energy under the condition that the temperature in the furnace reaches 850 ℃. The temperature can be instantly raised to 1100-1300 ℃ in the furnace, although the activation production is facilitated, the heat-resistant steel materials in China cannot bear the high furnace temperature at present, and the furnace temperature is always in an uncontrollable environment. Under the conditions of ultrahigh temperature and super flow, domestic heat-resistant steel needs to be maintained and replaced for a plurality of times of central combustion furnace tubes every year, and the value of each furnace tube is up to tens of thousands yuan.
The invention changes the central combustion tube into a pyrolysis steam channel, does not supply oxygen, does not burn, and changes CO and H2When combustible gas is led to the furnace outside the roller for oxygen distribution combustion, the furnace temperature is controllable and adjustable and is accurate to +/-50 ℃, the original design of central fire tube burning is avoided, the normal production can be ensured, and a large amount of repair cost is saved.
The chinese patent office also discloses an invention patent application of a rotary pyrolysis gasification device of internal and external heat integrated biomass in 2017, 8 and 11, for example, the invention patent application with publication number CN107033973A, which mainly comprises a feeding device, an external heat type pyrolysis device, an internal heat type gasification device, a sealing device, a discharging device, a burner and the like, wherein the feeding and discharging device and the sealing device ensure the sealing property of the pyrolysis gasification device and the continuous operation of the pyrolysis gasification reaction, high-temperature fuel gas is recycled to provide heat for the external heat pyrolysis, the energy consumption is reduced, and mixed gas of steam and air is used as a gasification medium to perform gas activation reaction with materials in an internal heat type converter to generate fuel gas and activated carbon, but the steam in the gasification medium cannot be removed, and the activation effect and the activation quality are adversely affected when the activated carbon is activated.
According to incomplete statistics, more than 85% of activated carbon in China is produced by a chemical method, and the amount of dust, CO2 and the like discharged into the atmosphere every year reaches tens of thousands of tons. Meanwhile, the internal combustion type activation furnace adopted by the existing carbon activation carries out aerobic activation by digesting self-carbonized materials, so that the consumption of raw materials is large.
Therefore, there is a need for an external heat type activation furnace to overcome the above problems.
Disclosure of Invention
In order to solve the above problems, an embodiment of the present invention provides an external heating type activation furnace, including a carbon activation converter, a combustion chamber, a grid activation pipe, and a superheated steam input pipeline, wherein:
the device comprises a carbon activation converter, a carbon activation material inlet, an activated carbon outlet, a carbon activation material activation area, a carbon activation material storage area and a carbon activation material storage area, wherein the carbon activation converter is rotatably arranged along the axis of the carbon activation converter, the front end and the rear end of the carbon activation converter are respectively provided with the carbon activation material inlet and the activated carbon outlet, the hollow inner cavity of the carbon activation converter forms the carbon activation material activation area, and the carbon activation material inlet is communicated with the;
the combustion chamber is arranged around the periphery of the carbon activation converter;
the air inlet of the activation pipe is arranged in the carbon activation material activation area, the activation pipe extends backwards, penetrates out of the carbon activation material activation area and then is communicated into the combustion chamber, and the combustion chamber is used for enabling combustible gas generated by activation and introduced from the activation pipe to be in contact with externally supplied air to be combusted to release heat and radiating the heat inwards from the outer wall of the carbon activation converter to supply heat for activation of the carbonization material in the carbon activation material activation area;
and a steam inlet of the superheated steam input pipeline is communicated to high-temperature steam, and a steam outlet of the superheated steam input pipeline penetrates through the axis of the carbonization material activation area and is parallel to the axis.
Further, the part of the activation pipe located in the carbon activation material activation area is coaxial with the carbon activation material activation area.
The device further comprises a partition plate, wherein the far end of the partition plate is fixed on the inner wall of the carbon activation converter, the near end of the partition plate extends to the activation pipe, the carbonization material activation area is divided into N sub-activation areas by N partition plates along the axial direction of the carbonization material activation area, and at least one superheated steam input pipeline is fixed in each sub-activation area.
Further, feed arrangement is connected to the carbonization material feed inlet of charcoal activation converter front end, feed arrangement includes the screw feeder, the one end of screw feeder is inserted the carbonization material feed inlet, screw drive device is connected to the other end of screw feeder, the top of screw feeder is provided with the carbonization material feed bin, the bottom of carbonization material feed bin with the screw feeder is connected.
Furthermore, the active carbon discharge port at the rear end of the carbon activation converter is connected with a discharging device, the discharging device comprises a discharging cooling coil pipe, one end of the discharging cooling coil pipe is connected with the active carbon discharge port, and the other end of the discharging cooling coil pipe is connected with the drum inlet of the discharging cooling drum.
Furthermore, the carbon activation converter penetrates through the upper part of the combustion chamber, a supporting device is respectively fixed at the front end and the rear end of the carbon activation converter, and supporting carrier rollers are arranged below the two supporting devices; the two supporting devices enable the carbon activation converter to be inclined, and the front end of the carbon activation converter is higher than the rear end of the carbon activation converter;
the carbon activation converter is driven by the power device to be arranged in a rotatable mode along the axis of the carbon activation converter.
Furthermore, a smoke outlet is formed in the upper portion of the combustion chamber and connected to the combustion chamber of the waste heat boiler, and an air inlet of the superheated steam input pipeline is connected to a steam outlet of the waste heat boiler.
Furthermore, the activation tube is provided with a rear end penetrating section, the rear end penetrating section penetrates through the rear end of the carbon activation converter and then is connected into the combustion chamber through an air tube, and the air tube is further connected with an air inducing system.
The embodiment of the invention has the beneficial effects that:
1. compared with the prior art, the method has the advantages that aerobic activation is carried out by digesting the self-carbonized material, the self-carbonized material is not oxidized and consumed by anaerobic activation, and the raw materials are saved. The raw material can be saved by 400 kg and about 1600 yuan per ton of the produced active carbon.
2. According to the invention, the section of the carbonization material activation area is set into a plurality of grids, so that the carbonization material forms a thin layer in each sub-activation area, and the contact area between the activation reaction of the carbonization material and the superheated steam is increased. The superheated steam and the carbon have tiny etching reaction to form micropores, thereby enlarging the specific surface area and enhancing the adsorption of the activated carbon.
3. Compared with the prior art that the energy is provided by natural gas, electric energy, crude oil and the like, the method provided by the invention is used for activating CO and H generated in the activation process2And combustible gas enters a combustion chamber to be combusted to provide heat energy of a carbon layer in a carbonized material activation area of the carbon activation converter, so that energy recycling is realized, and energy conservation and emission reduction are realized.
4. Hair brushThe CO and H generated in the activation process are removed2And combustible gas enters the combustion chamber to be combusted to provide heat radiation energy, so that high-temperature air is cleaned, and the energy-saving and environment-friendly effects are achieved.
5. Compared with the prior art, the reaction is violent due to low-temperature water vapor in the activation process, the carbonized material is activated to form macropores and transitional pores, and the specific surface area is low; according to the invention, superheated steam at 350-400 ℃ is adopted, the carbonized material is activated to open gaps and generate micropores, so that the iodine value reaches 1300-1800.
6. Compared with an external heating type converter in the same industry, the heat energy is converted from electric energy and petroleum energy, and the daily energy consumption is about 6000 RMB, so that enterprises can bear heavy burden. The invention solves the enterprise problems of high energy consumption and heavy pollution.
Drawings
FIG. 1 is a schematic diagram of a longitudinal cross-sectional structure of an embodiment of an external heat type activation furnace;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic diagram of a longitudinal cross-sectional structure of another embodiment of an external heated activation furnace;
fig. 4 is a top view of fig. 3.
In the figure:
1. a carbon activation converter; 1.1, a carbonized material feeding port; 1.2, a carbonization material activation area; 1.21, sub-activation region; 1.3, an active carbon discharge hole; 1.4, a limiting block; 2. a combustion chamber; 2.1, a smoke outlet; 3. a smoke pipe; 3.1, a rear end penetrating section; 4. a superheated steam input line; 5.1, a screw feeder; 5.2, a screw driving device; 5.3, a carbonization material bin; 6.1, discharging and cooling a coil pipe; 6.2, discharging and cooling the rotary drum; 7. a support device; 7.1, supporting a carrier roller; 8. a partition plate; 9. a waste heat boiler; 10. an induced draft system.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The embodiment of the invention discloses an external heating type activation furnace, which comprises a carbon activation converter 1, a combustion chamber 2, a grid type activation pipe 3 and a superheated steam input pipeline 4, and is shown in figures 1, 2, 3 and 4, wherein:
the carbon activation converter 1 is rotatably arranged along the axis of the carbon activation converter 1, a carbonization material inlet 1.1 and an activated carbon outlet 1.3 are respectively arranged at the front end and the rear end of the carbon activation converter 1, a hollow inner cavity of the carbon activation converter 1 forms a carbon activation material activation area, and the carbonization material inlet 1.1 and the activated carbon outlet 1.3 are communicated through the carbon activation material activation area;
the combustion chamber 2 is arranged around the periphery of the carbon activation converter 1;
the air inlet of the activation pipe 3 is arranged in the activation region of the carbon activation material, the activation pipe 3 extends backwards, penetrates out of the activation region of the carbon activation material and then is communicated into the combustion chamber 2, and the combustion chamber 2 is used for contacting and combusting combustible gas generated by activation introduced from the activation pipe 3 with externally supplied air to release heat and radiating the heat inwards from the outer wall of the carbon activation converter 1 to supply heat for activation of the carbon material in the activation region of the carbon activation material;
the steam inlet of the superheated steam input pipeline 4 is communicated to normal temperature steam, and the water steam is superheated to 350-400 ℃ in the activation section. The steam outlet of the superheated steam inlet line 4 penetrates into the carbonization material activation zone 1.2.
The carbon activation material enters the activation area of the carbon activation material from the feed inlet 1.1 of the carbon activation material, and then the carbon activation material is activated and converted into CO and H under the heating action of the combustion chamber 22Etc. activating the CO, H to be produced by the tube 32When the combustible gas is guided to the combustion chamber 2 to be combusted again, raw materials are saved, superheated steam (the temperature is 350-400 ℃) is introduced into the carbon activation material activation zone through the superheated steam input pipeline 4, the carbonization material activation zone 1.2 can keep an oxygen-free or oxygen-deficient state, the carbonization material activation zone 1.2 is enabled to react with the superheated steam to carry out oxygen-free activation, the carbonization material is not oxidized, the self carbonization material is not consumed, and the raw materials are saved.
With continued reference to fig. 1, the portion of the activation tube 3 within the activation zone of the char-activating material is parallel to the axis of the activation zone of the char-activating material. Under this setting, the heating of combustion chamber 2 to charcoal activation converter 1 is even, unanimous in the circumferencial direction, axial, guarantees that the temperature is unanimous under the different positions to do benefit to the accurate control of carbomorphism material activation temperature.
It should be noted that the system may further include a partition plate 8 having a distal end (an end far from the axis of the char activation zone) fixed to the inner wall of the char activation converter 1, and a proximal end (an end near to the axis of the char activation zone) extending to the activation tube 3, where the char activation zone 1.2 is divided into N sub-activation zones 1.21 by N partition plates 8 along its own axial direction, and at least one superheated steam input pipeline 4 is fixed in each sub-activation zone 1.21.
The carbon activation converter 1 is a rotary cylindrical furnace body, the activation pipe 3 forms an inner ring of the cylindrical furnace body, a cylindrical carbonized material activation area 1.2 surrounding the activation pipe 3 forms an outer ring of the cylindrical furnace body, a plurality of partition plates 8 are arranged in the carbonized material activation area 1.2, the partition plates 8 longitudinally divide the carbonized material activation area 1.2 into a plurality of sub-activation areas 1.21, if the number of the sub-activation areas 1.21 can be 4-10 (the situation that the number of the sub-activation areas is 8 is shown in the figure), each sub-activation area 1.21 is internally provided with a hot steam input pipeline 4 penetrating through the outer wall of the furnace body. Wherein the sectional area ratio of the outer ring to the inner ring is 0.35-0.60. According to the invention, the section of the 1.2 of the carbonization material activation area is set into a multi-grid, so that a thin layer of the carbonization material is formed in each sub-activation area 1.21, the contact area of the carbonization material activation reaction is increased, the thermal formation field of the carbonization material is enhanced, and the activation efficiency is improved.
One side of each partition plate 8, which is close to the activation pipe 3, is fixedly connected with the outer wall of the activation pipe 3, and one side of each partition plate 8, which is close to the carbon activation converter 1, is limited by a limiting block 1.4 correspondingly arranged on the inner wall of the carbon activation converter 1. One side of each partition plate 8 is fixedly connected with the outer wall of the activation tube 3, the other side of each partition plate is limited by a limiting block 1.4 correspondingly arranged on the inner wall of the carbon activation converter 1, the radial heating expansion position of the activation tube 3 is provided, the expansion is prevented from extending to the furnace wall of the carbon activation converter 1, and the carbon activation converter 1 is prevented from deforming in the radial direction.
It should be further noted that the carbonized material used in the embodiments of the present invention is a natural sheet (i.e., a sheet-like carbonized material) that does not need to be broken, and the sheet-like carbonized material may be a shell carbonized material, a bamboo charcoal material, or the like.
In another embodiment of the present invention, a carbonization material feeding port 1.1 at the front end of the carbon activation converter 1 is connected to a feeding device, the feeding device includes a screw feeder 5.1, one end of the screw feeder 5.1 is inserted into the carbonization material feeding port 1.1, the other end of the screw feeder 5.1 is connected to a screw driving device 5.2, a carbonization material bin 5.3 is arranged above the screw feeder 5.1, and the bottom of the carbonization material bin 5.3 is connected to the screw feeder 5.1.
In another embodiment of the present invention, the activated carbon discharge port 1.3 at the rear end of the carbon activation converter 1 is connected with a discharging device, the discharging device comprises a discharge cooling coil 6.1, one end of the discharge cooling coil 6.1 is connected with the activated carbon discharge port 1.3, and the other end of the discharge cooling coil 6.1 is connected with the drum inlet of the discharge cooling drum 6.2.
In another embodiment of the present invention, the char activation converter 1 penetrates through the upper portion of the combustion chamber 2, a support device 7 is fixed at each of the front end and the rear end of the char activation converter 1, and a support roller 7.1 is arranged below the two support devices 7; the two supporting devices 7 enable the carbon activation converter 1 to be inclined, and the front end of the carbon activation converter 1 is higher than the rear end of the carbon activation converter 1.
The inclination angle of the carbon activation converter 1 is 1-2 degrees, one end (left side) of the activation pipe 3, which extends into the inner cavity of the carbon activation converter 11, is a free end, the front end (right side) and the rear end (right side) of the carbon activation converter 1 are both supported on a supporting roller 7.1 in a rolling manner, and the left end of the activation pipe 3 and the right end of the carbon activation converter 1 are both reserved with thermal expansion positions, so that the carbon activation converter 1 is prevented from deforming in the axial direction, the deformation of the carbon activation converter 1 caused by high-temperature thermal expansion is effectively prevented, the heat loss in the furnace caused by the high-temperature thermal expansion deformation of the carbon activation converter 1 is reduced, the service life of the carbon activation converter 1 is prolonged, and the maintenance cost of the carbon activation converter.
In still another embodiment of the present invention, the char-activating converter 1 is rotatably arranged along its axis by the power plant.
The power device comprises a driving device and a transmission device, wherein the driving device can select a motor and the like, the transmission device can select a belt transmission device, specifically, a driving belt pulley is coaxially fixed on a power output shaft of the motor, a driven belt pulley is coaxially fixed at the front end of the carbon activation converter 1, and the driving belt pulley is connected with the driven belt pulley through a transmission belt. Of course, the power device can be in other forms, and the description is omitted.
In another embodiment of the present invention, a smoke outlet 2.1 is opened above the combustion chamber 2, the smoke outlet 2.1 is connected to the combustion chamber 2 of the waste heat boiler 9, and an air inlet of the superheated steam input pipeline 4 is connected to a steam outlet of the waste heat boiler 9.
The temperature of superheated steam of the waste heat boiler 9 is 350-400 ℃, the temperature of a carbon layer is about 950 ℃ after the carbonized material in the carbonized material activation area 1.2 of the carbon activation converter 11 is subjected to heat radiation outside the combustion chamber 2, and compared with the prior art, the temperature of low-temperature water vapor in the activation process causes the carbonized material to react with the water vapor violently, and the carbonized material is activated to form large holes and transition holes, so that the specific surface is low; the method adopts superheated steam with the temperature of 350-400 ℃, has small temperature difference with the carbonized material, has mild activation reaction of the carbonized material, is easier to open gaps, and generates new holes, so that the iodine value of the activated material (namely the activated carbon) reaches 1300-1800.
Further, the activation tube 3 is provided with a rear end penetrating section 3.1, the rear end penetrating section penetrates through the rear end of the carbon activation converter 1 and then is connected into the combustion chamber 2 through an air tube, and the air tube is further connected with an air inducing system 10. The induced air system 10 may be an induced draft fan, and the induced air system 10 sucks combustible gas generated in the process of activating the carbonized material into the activated carbon into the combustion chamber 2 from the front end of the activation tube 3 for combustion so as to heat the carbon activation converter 1.
The activated material, namely the activated carbon is discharged from an activated carbon discharge port 1.3 at the rear end of the carbon activation converter 1 through a discharge cooling coil 6.1, and then is further cooled through a discharge cooling drum 6.2 and then packaged.
High-temperature hot flue gas in the combustion chamber 2 enters a waste heat boiler 9 from a flue gas outlet 2.1 and is subjected to heat exchange through heat exchange equipment such as a heat exchanger to generate superheated steam, the superheated steam enters a carbonization material activation area 1.2 through a superheated steam input pipeline 4, a carbonization material in the carbonization material activation area 1.2 reacts with the superheated steam to be activated, combustible gas generated by activation is introduced into the combustion chamber 2 from an activation pipe 3, and contacts with supplied air to burn and release heat if the combustion chamber 2 is inside, and the heat is radiated from the outer wall of the carbon activation converter 1 to activate and supply heat to the carbonization material in the inner cavity of the carbon activation converter 1. Controlling the induced air quantity and the air supply quantity of the induced draft fan, thereby ensuring that the pressure of the carbon activation converter 1 is about 950 ℃ at the micro-positive pressure and the activation temperature; the discharge end is a tubular solid sealing structure, and the activated carbon solid flows out of the carbon activation converter 1 and enters the rotary cooling device for cooling and packaging.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the described devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
1. An external heating type activation furnace is characterized by comprising a carbon activation converter, a combustion chamber, an activation pipe, a superheated steam input pipeline, a grid type roller and a cooling system. Wherein:
the device comprises a carbon activation converter, a carbon activation oxidation zone, an activation zone and a cooling zone, wherein the carbon activation converter is rotatably arranged along the axis of the carbon activation converter, a carbonization material feeding port and an activated carbon discharging port are respectively arranged at the front end and the rear end of the carbon activation converter, a hollow grid-shaped inner cavity of the carbon activation converter forms the carbon activation oxidation zone, the activation zone and the cooling zone, and the carbonization material feeding port and the activated carbon discharging port are communicated through the carbon activation material activation zone;
the combustion chamber is arranged around the periphery of the carbon activation converter;
the gas inlet of the activation pipe is arranged at the combustion tail section of the return pyrolysis gas, the smoke pipe extends backwards, penetrates out of the activation area of the carbon activation material and then is communicated into the combustion chamber, and the combustion chamber is used for contacting and combusting combustible gas generated by activation introduced from the activation pipe with externally supplied air to release heat and radiating the heat inwards from the outer wall of the carbon activation converter to activate and supply heat to the carbon activation material in the activation area of the carbon activation material;
and a steam inlet of the superheated steam input pipeline is communicated to normal-temperature steam, and a steam outlet of the superheated steam input pipeline penetrates into the carbonization material activation area.
2. The external-heated activation furnace of claim 1, wherein the portion of the activation tube within the char activation material activation zone is parallel to the axis of the char activation material activation zone.
3. The external thermal activation furnace according to claim 2, further comprising a partition plate having a distal end fixed to an inner wall of the carbon activation furnace and a proximal end extending to the activation tube, wherein the carbonized material activation zone is divided into N sub-activation zones by N partition plates along its axial direction, and at least one superheated steam input pipeline is fixed in each sub-activation zone.
4. The external heating type activation furnace according to claim 1, wherein a carbonization material feeding hole at the front end of the carbon activation converter is connected with a feeding device, the feeding device comprises a screw feeder, one end of the screw feeder is inserted into the carbonization material feeding hole, the other end of the screw feeder is connected with a screw driving device, a carbonization material bin is arranged above the screw feeder, and the bottom of the carbonization material bin is connected with the screw feeder.
5. The external heating type activation furnace according to claim 1, wherein the activated carbon discharge port at the rear end of the carbon activation furnace is connected with a discharging device, the discharging device comprises a discharging cooling coil, one end of the discharging cooling coil is connected with the activated carbon discharge port, and the other end of the discharging cooling coil is connected with the drum inlet of the discharging cooling drum.
6. The external heating type activation furnace according to claim 1, wherein the charcoal activation converter penetrates through the upper part of the combustion chamber, a support device is fixed at each of the front end and the rear end of the charcoal activation converter, and a support roller is arranged below the two support devices; the two supporting devices enable the carbon activation converter to be inclined, and the front end of the carbon activation converter is higher than the rear end of the carbon activation converter;
the carbon activation converter is driven by the power device to be arranged in a rotatable mode along the axis of the carbon activation converter.
7. The external heated activation furnace of any one of claims 1 to 6, wherein a smoke outlet is opened above the combustion chamber, the smoke outlet is connected to the combustion chamber of the waste heat boiler, and an air inlet of the superheated steam input pipeline is connected to a steam outlet of the waste heat boiler.
8. The external heating type activation furnace of claim 7, wherein the activation tube has a rear end piercing section, the rear end piercing section passes through the rear end of the carbon activation converter and then is connected to the combustion chamber through an air return pipe, the air return pipe introduces clean high-temperature air into the waste heat boiler after combustion in the combustion chamber to generate normal-temperature water vapor, and the temperature is reduced to 180 ℃ and then is discharged to the atmosphere through an induced draft fan.
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| CN202011553678.4A CN112624113A (en) | 2020-12-24 | 2020-12-24 | External heating type activation furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116177548A (en) * | 2023-04-27 | 2023-05-30 | 山西新辉活性炭有限公司 | Carbon activation integrated furnace and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213707754U (en) * | 2020-11-16 | 2021-07-16 | 咸宁嘉竹新材料科技有限公司 | External heating type activation furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN213707754U (en) * | 2020-11-16 | 2021-07-16 | 咸宁嘉竹新材料科技有限公司 | External heating type activation furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116177548A (en) * | 2023-04-27 | 2023-05-30 | 山西新辉活性炭有限公司 | Carbon activation integrated furnace and use method thereof |
| CN116177548B (en) * | 2023-04-27 | 2023-07-07 | 山西新辉活性炭有限公司 | Carbon activation integrated furnace and use method thereof |
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Application publication date: 20210409 |